Tenma 72-2985, Руководство пользователя, Страница: 8 / 10

8
TECHNICAL INDEX
• Accuracy: ± (a% r b count).
• Environment temperature: 23°C ± 5°C (73.4°F ± 9°F), relative humidity: ≤75%.
DC VOLTAGE MEASUREMENT
Range Resolution Accuracy
200.0mV 0.1mV ± (0.7% + 5)
2.000V 1mV
± (0.7% + 3)
20.00V 10mV
200.0V 100mV
600V 1V
• Input impedance: approx. 10MΩ.
• As the input impedance on the meter is high,
when measuring a source of lower voltage
and lower impedance (less than 10MΩ), the
measurement may be unstable for a short
time, but will stabilize.
• Warning: Maximum input voltage: ±600V
AC VOLTAGE MEASUREMENT
Range Resolution Accuracy
2.000V 1mV
± (1.0% + 3)
20.00V 10mV
200.0V 100mV
± (1.0% + 3)
VFC mode:
± (4.0% + 3)
600V 1V
± (1.2% + 3)
VFC mode:
± (4.0% + 3)
• Input impedance: approx. 10MΩ.
• Show true virtual value: frequency response:
45~400Hz.
• Accuracy guarantee range: 5-100% range,
short circuit allows <10 residue readings.
• Non-sinusoidal wave counts add error by
crest factor:
- When crest factor is 1~2, add 3%.
- When crest factor is 2~2.5, add 5%.
- When crest factor is 2.5~3, add 7%.
• Warning: Maximum input voltage: 600Vrms.
RESISTANCE MEASUREMENT
Range Resolution Accuracy
200.0Ω 0.1Ω
± (1.0% + 2)
2.000kΩ 1Ω
20.00kΩ 10Ω
200.0kΩ 100Ω
2.000MΩ 1kΩ
± (1.2% + 3)
20.00MΩ 10kΩ
• Range: measured value = measurement
display value - meter pen short circuit value.
• Open circuit voltage is about 1V.
• Overload protection: 600Vrms.